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| package com.qefee.pj.testrecord;
import android.media.MediaPlayer;
import android.media.MediaRecorder;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import java.io.File;
import java.io.IOException;
public class MainActivity extends AppCompatActivity {
private static final String TAG = "MainActivity";
* 开始录音按钮.
*/
Button startRecordButton;
* 停止录音按钮.
*/
Button stopRecordButton;
* 播放录音按钮.
*/
Button playRecordButton;
* 停止播放录音按钮.
*/
Button stopPlayRecordButton;
* 录音信息按钮.
*/
Button recordInfoButton;
* 录音信息TextView.
*/
TextView recordInfoTextView;
* 播放器对象.
*/
private MediaPlayer mediaPlayer;
* 录音器对象.
*/
private MediaRecorder mediaRecorder;
* 录音文件名.
*/
private String recordFileName;
* 录音文件.
*/
private File recordFile;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recordFileName = "r.3gp";
recordFile = new File(getExternalCacheDir(), recordFileName);
startRecordButton = (Button) findViewById(R.id.startRecordButton);
stopRecordButton = (Button) findViewById(R.id.stopRecordButton);
playRecordButton = (Button) findViewById(R.id.playRecordButton);
stopPlayRecordButton = (Button) findViewById(R.id.stopPlayRecordButton);
recordInfoButton = (Button) findViewById(R.id.recordInfoButton);
recordInfoTextView = (TextView) findViewById(R.id.recordInfoTextView);
startRecordButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try {
mediaRecorder = new MediaRecorder();
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
mediaRecorder.setOutputFile(recordFile.getAbsolutePath());
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
mediaRecorder.prepare();
mediaRecorder.start();
Log.i(TAG, "onClick: 录音开始");
} catch (IOException e) {
Log.e(TAG, "onClick: 录音失败", e);
} catch (IllegalStateException e) {
Log.e(TAG, "onClick: 录音失败", e);
}
}
});
stopRecordButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mediaRecorder != null) {
try {
mediaRecorder.stop();
mediaRecorder.release();
mediaRecorder = null;
Log.i(TAG, "onClick: 录音停止");
} catch (IllegalStateException e) {
Log.e(TAG, "onClick: 录音状态不正确", e);
}
} else {
Log.i(TAG, "onClick: 录音器没有准备好");
}
}
});
playRecordButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (recordFile.exists()) {
try {
mediaPlayer = new MediaPlayer();
mediaPlayer.setDataSource(recordFile.getAbsolutePath());
mediaPlayer.prepare();
mediaPlayer.start();
Log.i(TAG, "onClick: 播放录音开始");
} catch (IOException e) {
Log.e(TAG, "onClick: 播放录音失败", e);
}
} else {
Log.i(TAG, "onClick: 没有录音文件");
}
}
});
stopPlayRecordButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mediaPlayer != null) {
mediaPlayer.release();
mediaPlayer = null;
Log.i(TAG, "onClick: 停止播放录音");
} else {
Log.i(TAG, "onClick: 播放器没有准备好");
}
}
});
recordInfoButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mediaPlayer != null) {
int milliseconds = mediaPlayer.getDuration();
recordInfoTextView.setText(String.valueOf(milliseconds));
Log.i(TAG, "onClick: 获取录音信息");
} else {
Log.i(TAG, "onClick: 播放器没有准备好");
}
}
});
}
}
|
